Correction Values In The Case Of Divergent Operating Conditions - Ygnis VARJET Serie Manual Tecnico

4.6 Correction values in the case of divergent operating conditions

4.6.1
Mean boiler water temperature
Differential exhaust gas
temperature
Air excess
Differential exhaust gas
temperature
4.6.2
Mean temperature difference*
Correction for stopped losses
* Mean temperature difference = mean boiler water temperature minus ambient air temperature
Mean boiler water temperature = mean value of outlet and return temperature
1NO0P0007-A
Varjet 1 - 14
Exhaust gas temperature correction values
t °C
t K

-
t
K
Correction values for losses when stopped in the case of divergent operating
conditions
tm
qB
-
40 50 60
-24 -16 -8
-
1.10 1.15 1.20
-4 -2 ± 0
-
°C 30 40
% -40 -20
70 80 90
± 0 +8 +16
1.25 1.30 1.35
+2 +4 +5
50 60 70
± 0 20 40
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